Joint Dental Epidemioogical Survey In Nigeria(Follow-Up Research)

在目前的后续研究中，与上次调查（1981年）中调查的儿童生活在伊莱-伊夫岛同一地区的580名儿童接受了调查。1986年的随访研究的目的是1)比较尼日利亚儿童和日本儿童的carles经历，2)调查1981年在Ile-Ife检查的85名受试者的carles病变的纵向变化。实验结果如下：1。尼日利亚儿童龋齿的发病率远低于日本儿童。5年间，尼日利亚城市地区儿童的龋病发病率略有上升，农村地区儿童龋病发病率略有下降。通过对同一对象的随访研究，可以确定最初的龋齿是由于磨蚀磨蚀而消失的，特别是在第一臼齿上。使用CPITN对6734名尼日利亚儿童进行了牙周病检查。牙周病患病率为84.2%，主要表现为牙龈炎、牙石淤积严重，对牙周组织的损害较少。这将与以传统饮食喂养密切相关。Ile-Ife儿童应重视口腔卫生和预防的必要性。

Five hundreds eighty children in the same arca of Ile-Ife as those examined in the last survey (in 1981) were examined in the present follow-up rescarch.The purpose of this follow-up research of 1986 were 1) to compare the carles experlence between the Nigerlan children and their Japanese counterpart and 2) to investigate the longitudinal changes of carles lesions of the same 85 subjects in Ile-Ife examined in 1981.The results obtained as follows:1.The incidence of carics in the Nigerian children was much lower than that of their Japanese counterpart.2.The caries experience of the Nigerlan children seemed to increase slightly in the urban area during five years and decrease slightiy in the rural area.3.By the follow-up research of the same subjects,it could be ascertained the initial caries disappeared by an intensive attrition on the molars,especially on the first moiars.The periodontal disease was examined in the Nigerian children, 6734 in number,using the CPITN.Tne prevalence of the periodontal discase was 84.2%,mainly containing the gingivitis, and intensive caluculus deposit,while the disturbance of the periodontal tissue was less.It will be closely related to feeding on the traditional diets.The necessity of the oral hygiene and prophylaxis should be emphasized in the children in Ile-Ife.